The staggering salary reported to be offered for Conca's services comes only a year after the former Argentina under-20 international left Chinese Super League club Guangzhou Evergrande, for who he scored scored 55 goals in 100 appearances.

Fred, left, has warned fans that Fluminense will not play should the players continue to be threatened by fans.

SAO PAULO -- Former Brazil striker Fred warned on Thursday that he and his Fluminense teammates might not play this weekend following threatening behaviour by fans after the team's recent run of defeats.

A few dozen Fluminense fans shouted abuse at players, threw objects and hit out at their cars earlier Thursday as the team left a Rio de Janeiro airport where they had touched down following a 1-0 loss to Chapecoense, their third in a row.